Part 1 Themes and issues: the rise in productive capacity; visions of the future; concepts and approaches; role of resource development and management; volume organization. Part 2 Resources available for agriculture: agro-ecosystems; crop distribution; climate and crop productivity; soils for plant growth; comparisons of environmental quality; arable land and water resources. Part 3 Trends in world food production: growth of population and food production; changes in consumption, trade and nutrition; components of growth in agricultural production. Part 4 Prospective studies of food and agriculture: resource/ecological studies - Clark, Revelle and Buringh; socio-economic studies - Global 2000, Agriculture Towards 2000; resource-economic studies. Part 5 Population pressures and the demand for land resources: background on population and income growth; some implications for agriculture; competition for agricultural land; process of agricultural land conversion - United States, Canada, Britain; indirect effects of urbanization on agricultural lands. Part 6 Water resources and agriculture: irrigated lands; regional examples of supply/demand relations - Egypt, United States, India; ecological aspects of irrigation; human dimensions of irrigation; management issues - irrigation preformance, system design and operation, institutional control and decision making. Part 7 Land degradation: physical/biological loss - measures of soil erosion, regional estimates of soil erosion - North America, Asia, Africa, Tropical America, Soviet Union, causes of erosion and erosion effects, soil conservation; chemical change; desertification. Part 8 Climatic variations and food production relations: weather and climate; instability and change in climate; adaptability of agricultural systems. Part 9 Role of energy in agricultural development: energy relations, intensities and components of energy use; productivity/efficiency issues; supply/demand relations; yield response and productivity; environmental effects; energy alternatives - fertilizers, field operations, irrigation, pesticides, organic farming and intermediate technology. Part 10 Conclusions: challenges of the food problem; a synthesis of demand and supply relations; strategies for sustainable development.